# OAuthProvider::generateToken

(PECL OAuth >= 1.0.0)

OAuthProvider::generateToken — Generate a random token

### Beschreibung

final public static OAuthProvider::generateToken(int `$size`, bool `$strong` = `false`): string

Generates a string of pseudo-random bytes.

### Parameter-Liste

`size`
  The desired token length, in terms of bytes.
`strong`
  Setting to `true` means `/dev/random` will be used for entropy, as otherwise the non-blocking `/dev/urandom` is used. This parameter is ignored on Windows.

### Rückgabewerte

The generated token, as a string of bytes.

### Fehler/Exceptions

If the `strong` parameter is `true`, then an `E_WARNING` level error will be emitted when the fallback rand() implementation is used to fill the remaining random bytes (e.g., when not enough random data was found, initially).

### Beispiele

Beispiel #1 OAuthProvider::generateToken() example

`<?php
$p = new OAuthProvider();
$t = $p->generateToken(4);
echo strlen($t), PHP_EOL;
echo bin2hex($t), PHP_EOL;
?>`

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

    4
    b6a82c27

### Anmerkungen

> Hinweis: When not enough random data is available to the system, this function will fill the remaining random bytes using the internal PHP rand() implementation.

### Siehe auch

- openssl_random_pseudo_bytes() - Generate a pseudo-random string of bytes
- mcrypt_create_iv() - Creates an initialization vector (IV) from a random source

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